Description

Mefenpyr-Diethyl is a highly effective safener used in modern agrochemical formulations to protect cereal crops from herbicide injury. Its core value lies in selectively enhancing crop tolerance to specific classes of herbicides, thereby increasing application safety and yield potential. This compound is essential for agricultural chemical manufacturers and formulators developing advanced herbicide solutions for global wheat and barley production.

Application

• Primary use as a herbicide safener in post-emergence applications for cereals.
• Formulation component to protect wheat and barley from sulfonylurea and related herbicide families.
• Key ingredient in crop protection products to widen the application window and improve selectivity.
• Used in combination with herbicides like iodosulfuron and mesosulfuron for enhanced weed control safety.
• Enables the use of more effective herbicides at optimal doses without crop damage.
• Critical for developing sustainable agricultural practices by minimizing crop stress.

Basic Information

Product Name	Mefenpyr-Diethyl
CAS No.	135590-91-9
Molecular Formula	C₁₅H₁₈N₂O₄
Molecular Weight	290.32 g/mol
Synonyms	Mefenpyr-diethyl; 1-(2,4-Dichlorophenyl)-5-methyl-1H-pyrazole-3-carboxylic acid, diethyl ester; Ethyl 1-(2,4-dichlorophenyl)-5-methylpyrazole-3-carboxylate; Mefenpyr; AE F107892; Hoe 107892; Safener Mefenpyr
EINECS	Contact for details

Quality Control

Our Mefenpyr-Diethyl is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. The product undergoes rigorous analytical testing, including HPLC for assay and related substances, to meet the exacting standards required for agrochemical active ingredients. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee compliance with your formulation specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from heat, open flames, and incompatible materials. The original container is the optimal storage vessel to maintain product integrity.

Specification

Item	Specification
Appearance	Off-white to pale yellow crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.